The Cult of the Shrieking Sun

Background
The Cult of the Shrieking Sun is devoted to the worship of its titular god. Though evil, their footprint on the surface world is thankfully small. Not only is their demiplane eternally sunny, balmy and blue-skied, but their sustenance is also provided for by use of the Tubbytronic Superdrome, which converts the eternal blaze of their deity into both food and drink. As such, there is no real reason to leave their Eden. It is only on specific days of unholy celebration that the cultists emerge from their demiplane in order to kidnap new members for their cult.

People who are captured are processed by a mechanical construct at the heart of the Superdrome, only known by its ponderous boomings of ‘Noo-Noo’. There, they undergo a horrific process that sears and scars them physically and psychologically, leaving them blank slates to be converted into fresh cultists. Ironically though, that is where all suffering ceases to be, and the halcyon existence of the new cultist begins. Everything within the plane is catered to the bliss of its converts. It could be seen as a mercy, to be released from the cares of the world.

The Cult is overseen by its Quadrumvirate, The Four Lords Tubbos, otherwise referred to collectively as Tubbos the Four. Each resides in a different area of the Shining Desert, in its own respective plane – a demiplane. Little actually differs from location to location – except a slight excess of the type of cultist as corresponds with its ruler’s type. It can also be assumed that each plane has its own Tubbytronic Superdrome, though it might also be that the artifact has separated itself into four aspects.

The four Lords are addressed as follows:
 * The Tinky Winky
 * The Dipsy
 * The Laa-Laa
 * The Po

All four, unlike the rest of the cultists, seem to maintain sentience and speech. They oversee and command their followers to further the worship of the Shrieking Sun, and to live their lives blissfully, as was commanded by their deity.